latex2utf8: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/latex2utf8 - from package: liblatex-decode-perl

You may install the required package with command apt-get install {package}

Error in other languages:
latex2utf8: bevel nie gevind nie
latex2utf8: comandă negăsită
latex2utf8: comando não encontrado
latex2utf8: commande introuvable
latex2utf8: command not found
latex2utf8: käsku ei ole
latex2utf8: không tìm thấy lệnh
latex2utf8: komanda nerasta
latex2utf8: Kommando nicht gefunden.
latex2utf8: kommandot finns inte
latex2utf8: komut yok
latex2utf8: nie znaleziono polecenia
latex2utf8: níor aimsíodh an t-ordú
latex2utf8: no se encontró la orden
latex2utf8: no s'ha trobat l'ordre
latex2utf8: opdracht niet gevonden
latex2utf8: parancs nem található
latex2utf8: perintah tidak ditemukan
latex2utf8: príkaz nenájdený
latex2utf8: příkaz nenalezen
latex2utf8: команда не найдена
latex2utf8: командата не е открита
latex2utf8: 命令找不到
latex2utf8: コマンドが見つかりません